Martyana martyi
Length:28

 Width: 9

 Striae:5






























Collection 1141a

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This image was taken utilizing DIC for the specimen above.


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The frustules of this taxon are quadrate in a girdle view. They are also slighly narrower at one end than the other. The valve is ovate and has rounded apices with one apex wider thatn thee other. It has a distinctive psuedoraphe valve with broad striae. It is most distinguished by its valve shape and occuring in fresh water (Patrick and Reimer 1966).


  • Type Locality
    New England States, Middle Atlantic States, Southeastern States, Gulf Coast States, South Central States, East Central States, Lakes States, Plains States, Oregon, California(Patrick and Reimer 1966).

  • Synonyms
    Opephora martyi Herib., Diat. Foss. Auvergne, vol. 1, p. 43, pl. 8, fig. 20. 1902 (Patrick and Reimer 1966).
  • Ecology
    This taxon may be found in lakes and rivers and is considered to be alkaliphilous to alkalibionic. It is halobin indifferent and prefers a limnophilous current. It is also eutriphic to mesotrophic ( Lowe 1974 ).

    Size ranges and morphology

  • Length is 5 to 60 micrometers (Patrick and Reimer 1966).
  • Width is 4 to 8 micrometers (Patrick and Reimer 1966).
  • Striae are 4.5 to 8 in 10 micrometers (Patrick and Reimer 1966).